package com.atguigu.lease.web.admin.service.impl;

import com.atguigu.lease.common.constants.RedisConstant;
import com.atguigu.lease.common.exception.LeaseException;
import com.atguigu.lease.common.jwt.JwtUtil;
import com.atguigu.lease.common.result.ResultCodeEnum;
import com.atguigu.lease.model.entity.SystemUser;
import com.atguigu.lease.web.admin.service.LoginService;
import com.atguigu.lease.web.admin.service.SystemUserService;
import com.atguigu.lease.web.admin.vo.login.CaptchaVo;
import com.atguigu.lease.web.admin.vo.login.LoginVo;
import com.atguigu.lease.web.admin.vo.system.user.SystemUserInfoVo;
import com.baomidou.mybatisplus.core.conditions.query.LambdaQueryWrapper;
import com.wf.captcha.SpecCaptcha;
import com.wf.captcha.base.Captcha;
import io.jsonwebtoken.Claims;
import org.apache.commons.codec.digest.DigestUtils;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.data.redis.core.RedisTemplate;
import org.springframework.stereotype.Service;
import org.springframework.util.ObjectUtils;

import java.util.UUID;
import java.util.concurrent.TimeUnit;

@Service
public class LoginServiceImpl implements LoginService {

    @Autowired
    private RedisTemplate<String, Object> redisTemplate;

    @Autowired
    private SystemUserService systemUserService;

    @Override
    public CaptchaVo getCaptcha() {
        SpecCaptcha specCaptcha = new SpecCaptcha(130, 48, 4);
        specCaptcha.setCharType(Captcha.TYPE_DEFAULT);
        String imageBase64 = specCaptcha.toBase64();
        String code = specCaptcha.text();
        String uuidKey = RedisConstant.ADMIN_LOGIN_PREFIX + UUID.randomUUID().toString().replace("-", "");
        redisTemplate.opsForValue().set(uuidKey, code, RedisConstant.ADMIN_LOGIN_CAPTCHA_TTL_SEC, TimeUnit.SECONDS);

        CaptchaVo captchaVo = new CaptchaVo(imageBase64, uuidKey);
        return captchaVo;
    }

    @Override
    public String login(LoginVo loginVo) {
        String redisCode =
                (String) redisTemplate.opsForValue().get(loginVo.getCaptchaKey());
        if (ObjectUtils.isEmpty(redisCode)) {
            throw new LeaseException(ResultCodeEnum.ADMIN_CAPTCHA_CODE_EXPIRED);
        }
        if (!redisCode.equalsIgnoreCase(loginVo.getCaptchaCode())) {
            throw new LeaseException(ResultCodeEnum.ADMIN_CAPTCHA_CODE_ERROR);
        }
        LambdaQueryWrapper<SystemUser> lambdaQueryWrapper = new LambdaQueryWrapper<>();
        lambdaQueryWrapper.eq(SystemUser::getUsername, loginVo.getUsername());
        SystemUser systemUser = systemUserService.getOne(lambdaQueryWrapper);

        if (systemUser == null) {
            throw new LeaseException(ResultCodeEnum.ADMIN_ACCOUNT_NOT_EXIST_ERROR);
        }
        String password = DigestUtils.md5Hex(loginVo.getPassword());
        if (!systemUser.getPassword().equals(password)) {
            throw new LeaseException(ResultCodeEnum.ADMIN_ACCOUNT_DISABLED_ERROR);
        }
        String token = JwtUtil.createToken(systemUser.getId(), systemUser.getUsername());
        return token;
    }

    @Override
    public SystemUserInfoVo customInfo(String accessToken) {

        Claims claims = JwtUtil.parseToken(accessToken);

        Integer userId = (Integer) claims.get("userId");

        SystemUser systemUser = systemUserService.getById(userId);


        SystemUserInfoVo systemUserInfoVo = new SystemUserInfoVo();
        systemUserInfoVo.setName(systemUser.getName());
        systemUserInfoVo.setAvatarUrl(systemUser.getAvatarUrl());
        return systemUserInfoVo;
    }
}
